Linux native USB library loaded.
spectrometer type: HR2000+ s/n: HR+C1886 number of channels: 1 firmware: 3.30.0 
Integration time 1.67 [ms], number of spectra 29 Sampling time 50000.0
Number of pixels: 2048
acquiring the readoutnoise patterns
Loop 1 of infinite
Waiting on trigger
Spectra acquired
Background acquired
Spectra acquired
board temperature: 26.185824
dt[ms]=    0.000 
dt[ms]=    1.234 
dt[ms]=    2.303 
dt[ms]=    0.944 
dt[ms]=    2.324 
dt[ms]=    1.061 
dt[ms]=    2.307 
dt[ms]=    1.058 
dt[ms]=    2.313 
dt[ms]=    1.077 
dt[ms]=    2.306 
dt[ms]=    0.933 
dt[ms]=    2.334 
dt[ms]=    1.048 
dt[ms]=    2.314 
dt[ms]=    1.054 
dt[ms]=    2.311 
dt[ms]=    1.056 
dt[ms]=    2.323 
dt[ms]=    0.919 
dt[ms]=    2.331 
dt[ms]=    1.071 
dt[ms]=    2.295 
dt[ms]=    1.073 
dt[ms]=    2.317 
dt[ms]=    0.936 
dt[ms]=    2.346 
dt[ms]=    1.031 
dt[ms]=    2.321 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  113.21947476551242
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.